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20379101293 = 66173342061
BaseRepresentation
bin10010111110101100…
…000110100001101101
31221121020212121110101
4102332230012201231
5313214022220133
613210110511101
71321004334325
oct227654064155
957536777411
1020379101293
118708520481
123b48b05491
131bca0aca25
14db47aa285
157e41a237d
hex4beb0686d

20379101293 has 8 divisors (see below), whose sum is σ = 20438262296. Its totient is φ = 20320027200.

The previous prime is 20379101287. The next prime is 20379101311. The reversal of 20379101293 is 39210197302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18128737449 + 2250363844 = 134643^2 + 47438^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20379101293 - 25 = 20379101261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20379101213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 463483 + ... + 505543.

It is an arithmetic number, because the mean of its divisors is an integer number (2554782787).

Almost surely, 220379101293 is an apocalyptic number.

It is an amenable number.

20379101293 is a deficient number, since it is larger than the sum of its proper divisors (59161003).

20379101293 is an equidigital number, since it uses as much as digits as its factorization.

20379101293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43455.

The product of its (nonzero) digits is 20412, while the sum is 37.

Adding to 20379101293 its reverse (39210197302), we get a palindrome (59589298595).

The spelling of 20379101293 in words is "twenty billion, three hundred seventy-nine million, one hundred one thousand, two hundred ninety-three".

Divisors: 1 661 733 42061 484513 27802321 30830713 20379101293